docs: def pretty_str(self, indent=0):
          """Return a human-readable string representation of this object.
  
          Kwargs:
              indent (int): The amount of spaces to use as indentation.
          """
          spaces = ' ' * indent
          pretty = '{}namespace {}:\n'.format(spaces, self.name)
          pretty += '\n\n'.join(c.pretty_str(indent + 2) for c in self.children)
          return pretty